diff --git a/package.json b/package.json
index 13f66077..841f8574 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zeromq",
-  "version": "3.2.3",
+  "version": "4.0.0",
   "description": "Prebuilt bindings for node.js to ZeroMQ",
   "main": "index",
   "gypfile": true,